if on average 7 ships out of 10 arrive safely at ports obtain mean and standard deviation of number of ships returning safely out of 160 ships

Q: A synthetic fiber used in manufacturing carpet has a tensile strength that is normally distributed…

A: normal distributionμ=75.5σ=3.5n=6p(x¯>75.75) = ?

Q: In an article in the Journal of Management, Joseph Martocchio studied employee absences from work at…

A:

Q: Determine the missing value so that the probability distribution is valid. x P(D=x) 1   2 0.26 3…

A: Given that  x P(D=x) 1 a 2 0.26 3 0.34 4 0.28 Note : According to bartleby experts…

Q: (a) above 30, (b) above 20, (c) above 18,

A: given datanormal distributionμ=17σ=5

Q: measure of dispersion 7, 11, 15, 15, 17, 19, 21

A: Note: Commonly used measure of dispersion is standard deviation. Given data: 7, 11, 15, 15, 17, 19,…

Q: measure of dispersion 7, 1

A: Note: Commonly used measure of dispersion is standard deviation. Given data: 7, 11, 15, 15, 17, 19,…

Q: 1. In your own words, discuss the following in not more than 5 sentences each: a. Null Hypothesis,…

A:

Q: The Kunkel's host a game night every weekend.  The duration of these game nights, typically, last…

A: Given:  The duration of these game nights, typically, last between 90 minutes and 180 minutes the…

Q: Anita's, a fast-food chain specializing in hot dogs and garlic fries, keeps track of the proportion…

A: Given n=5 P=0.45

Q: Using a normal curve table, give the percentage of scores between the mean and a Z score of (a)…

A:

Q: a recent​ year, 304 of the approximately​ 300,000,000 people in the United States were struck by…

A:

Q: Complete parts (a) through (d) below. a. At the 0.05 level of significance, is there evidence that…

A: It is given that  Population proportion, π = 20.4% = 0.204 Sample size, n = 100 Favourable cases, X…

Q: The data table below contains the amounts that a sample of nine customers spent for lunch (in…

A: Given:

Q: b) Suppose that Y₁, Y₂... Y₁0 is a random sample from a bernoulli (P) distribution. It is desired…

A: Given that  H0 : p = 0.5 , H1 : p = 0.1

Q: Let X∼U{1,2,…,n}, n∈N. Derive the moment generating function of X.

A: Given: X∼U{1,2,…,n}, n∈N we need to find mgf of X

Q: investor has found that company1 have an expected return on E(X) = 4% and variance for the return…

A: Given R= 0.4X +0.6Y  Find E(R) and V(R)=?

Q: Let XX....X be a random sample from an exponential distribution with density function 1 2 n Then the…

A: Pivotal quantity is the quantity which one is independent of parameter.

Q: The length of time it takes to complete a word puzzle is found to be normally distributed with a…

A: given data

Q: (c) Provide a 95% confidence interval for the difference between the two population means. (Usex - X…

A: Given that  n1 = 50 , n2 = 25

Q: Testing a claim about a population mean: t-Test An overly involved "neighborhood watch" group has…

A: The following information has been provided: 3.33 4.02 3.81 4.03 3.6 3.62 3.09…

Q: A novel on the Amazon.com web site has the following ratings, in number of stars, from reviewers:…

A:

Q: You may need to use the appropriate technology to answer this question. Suppose a certain state…

A: Given that  Sample sizes n1=120    , n2=30    Sample means X̄1=48437      , X̄2=55147      s1 =…

Q: (Assume standard normal distribution. Find the probability below. a. P( z 4.56)

A: standard normal distribution Z~N(0,1)

Q: 3. State or specify the null and alternative hypotheses in the following (use complete statements,…

A: The answer is attached below.

Q: (d) below 1.30, (e) above 1.90, (f) below 1.90,

A: standard normal distribution   Z~N(0,1)

Q: If 26 different women are randomly​ selected, find the probability that their mean weight is…

A: It is given that the mean is 169 lb and  the standard deviation is 39 lb.

Q: An auto maker is interested in information about how long transmissions last. A sample of…

A: From the given information we have Sample size (n) = 46Sample mean (x̅) = 150.7 Variance (s2) =…

Q: You may need to use the appropriate appendix table or technology to answer this question. A consumer…

A: The sample size for supermarket 1 is 280, sample mean is 83 and sample size for supermarket 2 is 300…

Q: Calculate the test statistic. (Use current year airfare - previous year airfare. Round your answer…

A: Given: Total number of flights=12 Sample is: Current year previous year 345 315 526 463 420…

Q: Suppose that in a randomly selected week, Raven learns approximately 12 new spelling words.  Let X…

A: Given that  X∼Poisson(λ=12)

Q: A random sample of 36 items gave a sample mean of 48 and a standard deviation of 12. Compute the…

A: Given that  n = 36 ,  x̄ = 48 ,  μ = 50 , s = 12

Q: Assume that experience with the satisfaction rating scale indicates that a population standard…

A: Given n1=280, n2=300  Level of significance ɑ=0.05   x̄1=83, x̄2=82  Standard deviations σ=14

Q: A certain stimulus administered to each of the 12 patients resulted in the following increase of…

A:

Q: of fiber is According to Chemical Engintering , an Important absorbency the avera average percent…

A: The values given in the question are as follows -   Cotton  Acetate  Sample size   n1 = 25  n2…

Q: 8.29 Sometimes surveys provide interesting information about issues that did not seem to be the…

A:

Q: there is 70% chance they should hit atleast how many pitches this season?

A: Given that, there is 70% chance they should hit.

Q: The sample space listing the eight simple events that are possible when a couple has three children…

A: Sample space: All possible outcomes.

Q: An accounting professor claims that no more than one quarter of undergraduate business students will…

A: Solution-: Given: n=720, X=170, p=1/4=0.25 We want to find P(X≥170)=?

Q: A particular intersection in a small town is equipped with a surveillance camera. The number of…

A:

Q: The waiting times between a subway departure schedule and the arrival of a passenger are uniformly…

A:

Q: what does the pharse "There are three kinds of lies: lies, damned lies, and statistics" mean

A: Here, the above phrase wrote by great statisticians Benjamin Disraeli and Mark Twain.

Q: ou collected data from 84 adults in multiple villages on the distance they lived from school when…

A: The data is collected from 84 adults in multiple villages on the distance they lived from school…

Q: Fill in the missing value so that the following table represents a probability distribution. x…

A: Missing value=0.4

Q: State the appropriate null and alternative hypotheses. Ho: P 0.40 Ha: P = 0.40 Ho: P = 0.40 Ha: p >…

A: It is given that  Population proportion, p = 40% = 0.40 Favourable cases, X = 82 Sample size, n =…

Q: Suppose that an airline uses a seat width of 16.6 in. Assume men have hip breadths that are normally…

A: Solution: Let X be the men have hip breadths that are normally distributed with a mean of 14.1 in.…

Q: The given by and probability density function a) Its f(y) Cumulative feys = 1 e 0 Elsewhere.…

A: Given pdf  y~exp(1/θ)

Q: A study was undertaken to determine whether there was a significant weight (in lb) loss after one…

A: Given Subject x y 1 140 115 2 160 130 3 180 135 4 120 125 5 132 112 6 146 130 7…

Q: QUESTION 2 A random variable X has probability density function - Ox de _x>0 0, elsewhere f(x;0) = =…

A: Use the concept of type I and typeII error.

Q: ) Produce an appropriate fully labelled chart to reflect the quarterly totals for each region.  b)…

A: a) From the given information, Country Q1 Q2 Q3 Q4 Totals Canada 15000 16000 18000 17000 66000…

Q: Given the following figures calculate a measure of relative Kurtosis round to 2 decimals…

A: